Prince Raj
Software Engineer · Full-stack systems · LLM evaluation · AWS
- praj81232@gmail.com
- +91 82183 28333
- Noida, India
- github.com/HardCoder404 · linkedin.com/in/prince404
Summary
Software engineer with 2+ years of experience shipping full-stack products on Node, Next.js and AWS, and the last year spent on LLM evaluation: designing rubrics, benchmarking coding models and building the internal platforms that score them. B.Tech CSE at Galgotias University (9.4 CGPA), graduating 2026.
Experience
Quess Corp
Feb 2026 – Present · Gurugram, IndiaSoftware Engineer
- Designed and ran structured evaluation workflows for coding LLMs by analysing real GitHub PRs, extracting task metadata (language, category, difficulty, critical files) and validating solutions against golden reference patches.
- Wrote 5 to 10 task-specific binary rubrics per task (40 to 50% correctness-weighted) to grade outputs across correctness, code quality, behavioural reasoning and summary accuracy.
- Ran side-by-side (SxS) evaluations of STEM and coding responses on a weighted framework (instruction following, truthfulness, correctness, writing style, verbosity) to determine model preference.
- Benchmarked internal model outputs against GPT-5.2 and Gemini-3 Pro, produced evidence-based justifications and delivered structured JSON reports used in post-training analysis.
WhatBytes
Aug 2025 – Jan 2026 · Bengaluru, IndiaFull Stack Developer
- Built an AI / LLM Evaluation & Feedback Platform used internally to benchmark and compare outputs from multiple large language models.
- Built the benchmarking infrastructure, supporting both static dataset runs and real-time model evaluations through provider APIs.
- Designed multi-turn conversation evaluation workflows capturing per-turn scores and overall conversation quality.
- Built an end-to-end project configuration system controlling task generation, evaluation rules, comparison modes and output formats; delivered clean, validated JSONL for research and analytics.
- Implemented quality-control workflows: mandatory rationales, automated validation checks and manual QC review queues.
Slooze
Nov 2024 – Jul 2025 · Coimbatore, Tamil NaduSr. Software Engineer · May 2025 – Jul 2025
- Spearheaded an internal design-to-dev pipeline on a custom Canva workspace, streamlining design handoff and cutting UI inconsistencies by 70%.
- Refactored and secured critical API endpoints for performance, RESTful alignment and resilience.
- Drove zero-downtime backend deployments on AWS with monitoring, autoscaling and rollback, reaching 99.9% uptime.
- Mentored junior developers and ran code reviews focused on scalability and maintainability; contributed to architecture decisions.
Software Engineer · Nov 2024 – Apr 2025
- Built and shipped the official company website with 3D model integration and Framer Motion animations.
- Moved data fetching from REST to GraphQL for a more scalable, structured architecture.
- Connected the Request Service module with Zoho Work Channel for automated lead capture, cutting cross-team response time by 60%.
- Refactored the codebase to remove redundant API calls, cutting initial page load time by 40%; deployed on scalable cloud infra with CI/CD.
DevTown
Sep 2023 – Oct 2024 · Mumbai, IndiaSDE I · Mar 2024 – Oct 2024
- Built an AI-powered chat application from the ground up, improving frontend efficiency by 60% and backend performance by 30%.
- Cut AI response latency from 1.86s to 1.2s (35% faster) through API design, caching and performance tuning.
- Led an AWS cost-saving initiative: identified unused resources and set S3 expiration policies, cutting over $50,000 a year.
- Developed and integrated APIs with secure authentication; shipped features on the MERN stack 40% faster.
Sr. Frontend Engineer · Sep 2023 – Feb 2024
- Built modern, responsive React UI components that lifted user engagement metrics by 25%.
- Owned frontend architecture decisions for scalable, maintainable, performance-optimised UI systems.
- Reviewed code and enforced quality, performance and security standards.
Xipper
Jun 2023 – Aug 2023 · Bengaluru, IndiaFull Stack Developer
- Designed and integrated RESTful APIs, reducing system overload and improving frontend-backend communication by 30%.
- Built real-time communication features on WebSocket for live chat, cutting latency issues by 35%.
- Led a performance overhaul: smoother tab switching, minimal downtime, faster navigation; reduced technical debt by 30% through reviews.
EliteKods
Dec 2022 – May 2023 · Pune, IndiaFull Stack Developer
- Optimised payment gateway integration, cutting transaction failures by 25%.
- Built and integrated mobile applications with smooth cross-device performance, reducing user complaints by 60%.
- Designed scalable cloud architecture on Microsoft Azure for AI workloads, improving throughput by 10% while cutting infra cost via autoscaling.
Selected projects
SafeReport · Product
Next.js · TypeScript · Prisma · NeonDB (Postgres) · Gemini AI · NextAuthAI-powered anonymous crime reporting platform. Gemini-powered incident analysis that classifies the report, extracts key facts and drafts the structured report automatically. A complete report in under a minute, tracked until it is resolved, with the reporter's identity never stored.
github.com/HardCoder404/crime-report-app
LLM Evaluation Platform · Case study · internal at WhatBytes
Next.js · TypeScript · Node.js · PostgreSQL · Redis · OpenAI / Gemini APIsThe system a team used to decide which model is actually better. Benchmark runner for static dataset passes and real-time evaluations across multiple provider APIs. Model decisions moved from opinion to evidence: every score has a rationale, every run is reproducible.
Production-grade Backend · Open source
Node.js · Express · TypeScript · MongoDB · Docker · AWS ECR / EC2Typed Node/Express API with a real CI/CD path to AWS. TypeScript Express API with versioned routes, health and version endpoints. Push to main, live on EC2 a few minutes later. Used as the base for my own services.
github.com/HardCoder404/production-grade-backend
AWS Deployment with CI/CD Guide · Open source · most-starred
AWS EC2 · Nginx · PM2 · Docker · AWS ECR · GitHub ActionsFrom SSH + PM2 + Nginx to Docker + ECR + GitHub Actions. Two complete paths: a basic PM2 + Nginx setup and a Docker + ECR + GitHub Actions pipeline. A guide other developers actually use; my most-starred repository.
github.com/HardCoder404/AWS-Deployment-with-CICD-Guide
Skills
Use in production: TypeScript, JavaScript, Node.js, Next.js, React, Express.js, PostgreSQL, MongoDB, Prisma, REST APIs, AWS (EC2, S3, CloudFront, Lambda), Docker, GitHub Actions / CI/CD, Tailwind CSS, Framer Motion
Comfortable: Python, SQL, Redis, GraphQL, Microservices, Event-driven systems, Serverless, Supabase, React Native, Angular, Zoho / Canva APIs
Going deeper: Kubernetes, LLM evaluation at scale, Observability, System design
AI / LLM work: Rubric design, SxS evaluation, Benchmarking (GPT-5.2, Gemini-3 Pro), Multi-turn conversation scoring, Gemini API, OpenAI API, Prompt design
Education
B.Tech, Computer Science and Engineering · Galgotias University, Noida
Aug 2022 – Sep 2026 · CGPA 9.4 / 10Senior Secondary (PCM) · New Lancer Convent School
Feb 2020 – Mar 2022 · 92%Achievements & certifications
- LeetCode 1800+ problems solved, 3-star, 200+ day streak
- Codeforces rating 1200+
- GSSoC 2024 open-source contributor
- AWS Academy Graduate: Cloud Foundations and Cloud Architecting
- 9.4 CGPA in B.Tech CSE
- GirlScript Summer of Code 2024, Open-source contributor (May – Jun 2024)